31 lines
882 B
Rust
31 lines
882 B
Rust
//! Test saving "default" and specific quality jpeg.
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#![cfg(all(feature = "jpeg", feature = "tiff"))]
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extern crate image;
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use image::{ImageFormat, ImageOutputFormat};
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use std::io::Cursor;
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#[test]
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fn jqeg_qualitys() {
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let img = image::open("tests/images/tiff/testsuite/mandrill.tiff").unwrap();
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let mut default = vec![];
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img.write_to(&mut Cursor::new(&mut default), ImageFormat::Jpeg)
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.unwrap();
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assert_eq!(&[255, 216], &default[..2]);
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let mut small = vec![];
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img.write_to(&mut Cursor::new(&mut small), ImageOutputFormat::Jpeg(10))
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.unwrap();
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assert_eq!(&[255, 216], &small[..2]);
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assert!(small.len() < default.len());
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let mut large = vec![];
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img.write_to(&mut Cursor::new(&mut large), ImageOutputFormat::Jpeg(99))
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.unwrap();
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assert_eq!(&[255, 216], &large[..2]);
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assert!(large.len() > default.len());
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}
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